38709864 has 24 divisors (see below), whose sum is σ = 104839410. Its totient is φ = 12903264.

The previous prime is 38709857. The next prime is 38709871. The reversal of 38709864 is 46890783.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (38709857) and next prime (38709871).

It can be written as a sum of positive squares in only one way, i.e., 37822500 + 887364 = 6150^2 + 942^2 .

It is a tau number, because it is divible by the number of its divisors (24).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 268747 + ... + 268890.

Almost surely, 2^38709864 is an apocalyptic number.

It is an amenable number.

38709864 is an abundant number, since it is smaller than the sum of its proper divisors (66129546).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

38709864 is a wasteful number, since it uses less digits than its factorization.

38709864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 537649 (or 537642 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 45.

The square root of 38709864 is about 6221.7251626860. The cubic root of 38709864 is about 338.2780993793.

The spelling of 38709864 in words is "thirty-eight million, seven hundred nine thousand, eight hundred sixty-four".